Agitator for soda-water receivers and generators



(No Model.)

A. D. PU-PPER.

Agitator for Soda Water Receivers and Generators. No. 231,847. Patented Au 31,1880;

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NITED STATES PATENT OFFICE.

ALVIN 1). PUFFEIt, OF BOSTON, MASSACHUSETTS.

AGITATOR FOR SODA-WATER RECEIVERS AND GENERATORS.

SPECIFICATION forming part of Letters Patent No. 231,847, dated August 31, 1880.

V Application filed July 12, 1880. (N 0 model.)

1' 0 all whom t't may concern.-

Be it known that I, ALVIN D. PUFFER, a citizen of the United States, residing at Boston, in the county of Suffolk, State of Massachusetts, have invented certain new and useful Im provements in Agitators for Soda-Water Receivers and Generators; and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in' the art to which it appertains to make and use the same.

This invention relates to revolving dashers or agitators for generators and receivers of soda or other aerated waters-that is to say, the generator in which the gas is generated and the receiver which is designated to charge the liquid with gas and store it untilitis wanted for use, the object in agitating the iiquid in the generator being to thoroughly incorporate the ingredients from which the gas is evolved, and in the receiver to carbonate or aerate the liquid that is constantly carrying into it the gas contained with it in the receiver, in order that it may be in a bright and sparkling condition when drawn.

The object of my invention is to protect the shaft or body of the agitator or dasher from the corrosive effects of the acids or chemicals employed in the generation of the gas and the charging of the water with such gas by preventing the undiluted acid or material from coming in direct contact with the agitator as such materialis poured into the generator, and by thoroughly mixing the water and acid, so that the latter shall be diluted uniformly and lessen the severity of its attack upon the metal of the blades or vanes of the dasher than if the acid remained comparatively undisturbed at thepoint at which itis poured into the water.

The invention consists, first, in the employment of an aperture in the shaft or body of the dasher, through which the acid or corrosive material may be poured without contact with and injury to the metal; and, secondly, in the employment of barred or slatted vanes extending in opposite directions from the shaft, and with their bars arranged diagonally to the axis of the shaft, in order to induce a circulation of the liquid from end to end of the receiver, and thereby thoroughly incorporate the ingredients, the whole being as hereinafter explained.

but in opposite directions.

The drawing accompanying this specifica tion represents a perspective view of an agitator or dasher containing my invention.

In this drawing the shaft of the agitator is shown at A as a straight bar, with journals a a at its ends to support it in the receiver or generator, and in carrying out one feature of my improvements I form in or near the center of this shaft an orifice, B, of sufficient size to allow the acid or corrosive material to be poured into the generator without contactwith the shaft, and to facilitate the passage of the acid through the orifice B, I locate the latter directly beneath the spout by which such acid is introduced.

One of the journals of the shaft protrudes through the side of the generator or receiver, and is provided with a hand-wheel or other device, and the relative positions of the wheel and the boundaries or sides I) b of the orifice should be noted and remembered, in order that such orifice may he allowed to stand in ahorlzontal position when the acid is introduced to prevent contact of acid with its sides.

In carrying out the second features of my improvements I add to opposite sides of the shaft, and extendin ga portion only of itslength, two barred vanes, G (l, each being composed of a series, I) b, 850., of blades departing bodily obliquely from the shaft, and with their outer ends confined or stayed by a bridge-plate or rib, c, the ends of which unite with and are secured to the shaft.

As the shaft and vanes rotate, the blades of the latter thoroughly agitate the liquid contents of the generator or receiver.

The vanes are arranged diagonally opposite each other upon the shaft, and the bars or blades of such vanes are in turn disposed obliquely to the horizontal plane of the vanes, The purpose in thus sloping the blades or bars transversely is to induce a circulation or current of the liquid contents of the generator from end to end of the latter, in order to thoroughly incorporate the acid with the water or other vehicle and the remaining ingredients, and by effectually dilutingsuch acid lessen the degree of its cor- IOSWG action upon the vanes of the dasher.

It will be observed that each vane carries upon its outer edge a narrow lip or iin, d, an

ranged at right angles in cross-section to the bridge-plate, and with the corners of the two closely joined. These fins d d are for service in the receiver or mixer in which the water or other liquid is charged with the gas produced in the generator, and their purpose is to form, with the bridge-plate. buckets to receive and carry into the body of liquid at each revolution of the dasher a portion of the gas standing above the liquid, thereby thoroughly aerating such liquid.

The object in arranging the vanes on diagonally-opposite sides of the shaft, as represented, is to permit the dasher to pass readily through the marble-dust or heavieringredients of the charge in the generator, at the same time providing sufficient agitating-surface.

Ordinarily the bars stand at right angles to the axis of the shaft; hence in revolution they do not displace theliquid contents of the generator longitudinally of the shaft, and the mixing of the acid with the other ingredients is very slowly or imperfectly carried on.

I claim 1. In agitators or dashers of generators and receivers for aerated liquids, a shaft having an orifice at some point between its extremities for passage of acid or other agent, substantially as and for purposes stated.

2. In combination with the shaft, the barred vanes arranged diagonally with respect to each other upon opposite sides of the shaft, substantially as herein described.

3. In combination with the shaft, the vanes formed or provided with bars arranged in cross-section obliquely in opposite directions to the greatest plane of said vanes, substantially as licreinbefore set forth, in order to induce a circulation of the contents of the generator from end to end of the latter.

4. In agitators or dashers of generators or with the shaft, of a vane having bars which stand in cross-section obliquely to the greatest plane of the vane, and a tin, d, substantially as herelnbefore set forth.

5. The agitator ordasher composed of the shaft having the orifice for passage of acid, and the barred or perforated vanes arranged diagonally with respect to each other upon opposite sides of the shaft, substantially as explained.

In testimony whereof I affix my signature in presence of two witnesses.

A. D. PUFFER.

Witnesses H. E. LODGE, J osnru E. WATTS.

receivers for aerated liquids, the combination, 

